**System Information**
Windows 8.1 64 bit; no dedicated GPU (Intel HD 4000)
**Blender Version**
Broken: (2.73)
Worked: Previous versions have had similar issues but 2.72 is working for me
**Short description of error**
I did a mixture of creating texts in a scene and then overlaying it to images I have in the Video Sequence Editor. Periodically I will stop the render and continue another day.
This morning when I continued, I noticed it was not rendering anything from the Sequencer, producing transparent images with just my 3D text alone. I disabled and re-enabled the Sequencer in Render > Post Processing settings. That's when Blender started to render from the end of the timeline and combined the 3D text from there to the current frame of the image imported into the VSE and produced the bad PNG sequence. I used Blender rendering engine for this but the problem occurred when I switched to Cycles rendering engime as well.
**Exact steps for others to reproduce the error**
Not sure if it's repeatable (but I do tend to notice after several thousands of frames for every project I've ever done, the greenbar in the timeline will begin to glitch to the end during rendering, but shifts back to the current frame after rendering is complete with no issues to the output)
1. Create an object in the 3D view (preferably text to reproduce the problem)
2. Import the scene into VSE
3. Have a movie/image sequence greater than about 8000 frames being rendered into a PNG sequence (roughly here it glitches, my problem today occurred at 8307 frames)
4. Before hitting the 8000 mark, periodically close the file and reopen it and continue rendering (don't save the file)